lightrec: update

diff --git a/deps/lightrec b/deps/lightrec
index 3ebca4b..a173cf4 160000 (submodule)
--- a/deps/lightrec
+++ b/deps/lightrec
@@ -1 +1 @@
-Subproject commit 3ebca4b2940c0f5ed73068cd690cca15e50ca73a
+Subproject commit a173cf409e11fbbdd4801aacc683a3d7592f499c